PDVs Proportional Directional Valves High Response Hydraulic Servo Valve

Hydraulic Proportional, high-response and servo valve

Proportional directional valves (PDVs) are a type of valve that can control the flow of fluid in a precise and controlled manner. They are often used in fluid power systems to control the movement of actuators, such as hydraulic cylinders or pneumatic motors.

PDVs have a spool that can be moved back and forth within a valve body. The spool is connected to an actuator, such as a hydraulic cylinder or pneumatic motor, and when a control signal is applied to the valve, it causes the spool to move within the valve body. This movement controls the flow of fluid into and out of the actuator, which in turn causes the actuator to move in a controlled manner.

PDVs offer several advantages over conventional on/off valves. One of the main advantages is their ability to control fluid flow in a precise and continuous manner. This allows for more precise control of actuator movement, which can improve system performance and reduce energy consumption. PDVs are also more responsive to control signals, as they can quickly adjust the flow of fluid to match the requirements of the system.

There are several types of PDVs available, including mechanical PDVs, electronic PDVs, and electro-hydraulic PDVs. Mechanical PDVs use a mechanical linkage or cam to control the spool movement, while electronic PDVs use an electronic controller to control the spool movement. Electro-hydraulic PDVs combine the features of both mechanical and electronic PDVs by using an electronic controller to control a hydraulic actuator that moves the spool within the valve body.

In conclusion, proportional directional valves are an important component of fluid power systems that require precise control of actuator movement. They offer several advantages over conventional on/off valves and are available in several different types to suit different applications.

Proportional directional valves are available as direct operated and pilot operated valves with or without integrated electronics (OBE). Using integrated electronics, they reduce the cabling effort and simplify handling. These valves are ideal for many closed loop applications.